<p>I think it would be better if it read:
"Stock tickers flashing, investors scrambling, and papers flying (these?) are the the glamours of Wall Street." I don't know lol. Unless the rest of your essay uses things from speech like "ah" I don't think you should put that there. Just my 2 cents :)</p>
<p>I like your original. The conversational "ah" personalizes the reaction and projects your personality in a way that something more expository doesn't. Particularly if this is the lead-in to prose that's a little more straightlaced, I think it'll be very effective. Nice images, too!</p>